package com.ptkc.utils;

import java.sql.Timestamp;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.*;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

/*
 * 日期工具类
 */
public class DatesUtil {
	// 获取当天的开始时间
	public static Date getDayBegin() {
		Calendar cal = new GregorianCalendar();
		cal.set(Calendar.HOUR_OF_DAY, 0);
		cal.set(Calendar.MINUTE, 0);
		cal.set(Calendar.SECOND, 0);
		cal.set(Calendar.MILLISECOND, 0);
		return cal.getTime();
	}

	// 获取当天的结束时间
	public static Date getDayEnd() {
		Calendar cal = new GregorianCalendar();
		cal.set(Calendar.HOUR_OF_DAY, 23);
		cal.set(Calendar.MINUTE, 59);
		cal.set(Calendar.SECOND, 59);
		return cal.getTime();
	}

	// 获取昨天的开始时间
	public static Date getBeginDayOfYesterday() {
		Calendar cal = new GregorianCalendar();
		cal.setTime(getDayBegin());
		cal.add(Calendar.DAY_OF_MONTH, -1);
		return cal.getTime();
	}

	// 获取昨天的结束时间
	public static Date getEndDayOfYesterDay() {
		Calendar cal = new GregorianCalendar();
		cal.setTime(getDayEnd());
		cal.add(Calendar.DAY_OF_MONTH, -1);
		return cal.getTime();
	}

	// 获取明天的开始时间
	public static Date getBeginDayOfTomorrow() {
		Calendar cal = new GregorianCalendar();
		cal.setTime(getDayBegin());
		cal.add(Calendar.DAY_OF_MONTH, 1);
		return cal.getTime();
	}

	// 获取明天的结束时间
	public static Date getEndDayOfTomorrow() {
		Calendar cal = new GregorianCalendar();
		cal.setTime(getDayEnd());
		cal.add(Calendar.DAY_OF_MONTH, 1);
		return cal.getTime();
	}

	// 获取本周的开始时间
	@SuppressWarnings("unused")
	public static Date getBeginDayOfWeek() {
		Date date = new Date();
		if (date == null) {
			return null;
		}
		Calendar cal = Calendar.getInstance();
		cal.setTime(date);
		int dayofweek = cal.get(Calendar.DAY_OF_WEEK);
		if (dayofweek == 1) {
			dayofweek += 7;
		}
		cal.add(Calendar.DATE, 2 - dayofweek);
		return getDayStartTime(cal.getTime());
	}

	// 获取本周的结束时间
	public static Date getEndDayOfWeek() {
		Calendar cal = Calendar.getInstance();
		cal.setTime(getBeginDayOfWeek());
		cal.add(Calendar.DAY_OF_WEEK, 6);
		Date weekEndSta = cal.getTime();
		return getDayEndTime(weekEndSta);
	}

	// 获取上周的开始时间
	@SuppressWarnings("unused")
	public static Date getBeginDayOfLastWeek() {
		Date date = new Date();
		if (date == null) {
			return null;
		}
		Calendar cal = Calendar.getInstance();
		cal.setTime(date);
		int dayofweek = cal.get(Calendar.DAY_OF_WEEK);
		if (dayofweek == 1) {
			dayofweek += 7;
		}
		cal.add(Calendar.DATE, 2 - dayofweek - 7);
		return getDayStartTime(cal.getTime());
	}

	// 获取上周的结束时间
	public static Date getEndDayOfLastWeek() {
		Calendar cal = Calendar.getInstance();
		cal.setTime(getBeginDayOfLastWeek());
		cal.add(Calendar.DAY_OF_WEEK, 6);
		Date weekEndSta = cal.getTime();
		return getDayEndTime(weekEndSta);
	}

	// 获取本月的开始时间
	public static Date getBeginDayOfMonth() {
		Calendar calendar = Calendar.getInstance();
		calendar.set(getNowYear(), getNowMonth() - 1, 1);
		return getDayStartTime(calendar.getTime());
	}

	// 获取本月的结束时间
	public static Date getEndDayOfMonth() {
		Calendar calendar = Calendar.getInstance();
		calendar.set(getNowYear(), getNowMonth() - 1, 1);
		int day = calendar.getActualMaximum(5);
		calendar.set(getNowYear(), getNowMonth() - 1, day);
		return getDayEndTime(calendar.getTime());
	}

	// 获取上月的开始时间
	public static Date getBeginDayOfLastMonth() {
		Calendar calendar = Calendar.getInstance();
		calendar.set(getNowYear(), getNowMonth() - 2, 1);
		return getDayStartTime(calendar.getTime());
	}

	// 获取上月的结束时间
	public static Date getEndDayOfLastMonth() {
		Calendar calendar = Calendar.getInstance();
		calendar.set(getNowYear(), getNowMonth() - 2, 1);
		int day = calendar.getActualMaximum(5);
		calendar.set(getNowYear(), getNowMonth() - 2, day);
		return getDayEndTime(calendar.getTime());
	}

	// 获取本年的开始时间
	public static Date getBeginDayOfYear() {
		Calendar cal = Calendar.getInstance();
		cal.set(Calendar.YEAR, getNowYear());
		cal.set(Calendar.MONTH, Calendar.JANUARY);
		cal.set(Calendar.DATE, 1);
		return getDayStartTime(cal.getTime());
	}

	// 获取本年的结束时间
	public static Date getEndDayOfYear() {
		Calendar cal = Calendar.getInstance();
		cal.set(Calendar.YEAR, getNowYear());
		cal.set(Calendar.MONTH, Calendar.DECEMBER);
		cal.set(Calendar.DATE, 31);
		return getDayEndTime(cal.getTime());
	}

	// 获取某个日期的开始时间
	public static Timestamp getDayStartTime(Date d) {
		Calendar calendar = Calendar.getInstance();
		if (null != d)
			calendar.setTime(d);
		calendar.set(calendar.get(Calendar.YEAR), calendar.get(Calendar.MONTH),
				calendar.get(Calendar.DAY_OF_MONTH), 0, 0, 0);
		calendar.set(Calendar.MILLISECOND, 0);
		return new Timestamp(calendar.getTimeInMillis());
	}

	// 获取某个日期的结束时间
	public static Timestamp getDayEndTime(Date d) {
		Calendar calendar = Calendar.getInstance();
		if (null != d)
			calendar.setTime(d);
		calendar.set(calendar.get(Calendar.YEAR), calendar.get(Calendar.MONTH),
				calendar.get(Calendar.DAY_OF_MONTH), 23, 59, 59);
		calendar.set(Calendar.MILLISECOND, 999);
		return new Timestamp(calendar.getTimeInMillis());
	}

	// 获取今年是哪一年
	public static Integer getNowYear() {
		Date date = new Date();
		GregorianCalendar gc = (GregorianCalendar) Calendar.getInstance();
		gc.setTime(date);
		return Integer.valueOf(gc.get(1));
	}

	// 获取本月是哪一月
	public static int getNowMonth() {
		Date date = new Date();
		GregorianCalendar gc = (GregorianCalendar) Calendar.getInstance();
		gc.setTime(date);
		return gc.get(2) + 1;
	}

	// 两个日期相减得到的天数
	public static int getDiffDays(Date beginDate, Date endDate) {
		if (beginDate == null || endDate == null) {
			throw new IllegalArgumentException("getDiffDays param is null!");
		}
		long diff = (endDate.getTime() - beginDate.getTime())
				/ (1000 * 60 * 60 * 24);
		int days = new Long(diff).intValue();
		return days;
	}

	// 两个日期相减得到的毫秒数
	public static long dateDiff(Date beginDate, Date endDate) {
		long date1ms = beginDate.getTime();
		long date2ms = endDate.getTime();
		return date2ms - date1ms;
	}

	// 获取两个日期中的最大日期
	public static Date max(Date beginDate, Date endDate) {
		if (beginDate == null) {
			return endDate;
		}
		if (endDate == null) {
			return beginDate;
		}
		if (beginDate.after(endDate)) {
			return beginDate;
		}
		return endDate;
	}

	// 获取两个日期中的最小日期
	public static Date min(Date beginDate, Date endDate) {
		if (beginDate == null) {
			return endDate;
		}
		if (endDate == null) {
			return beginDate;
		}
		if (beginDate.after(endDate)) {
			return endDate;
		}
		return beginDate;
	}

	// 返回某月该季度的第一个月
	public static Date getFirstSeasonDate(Date date) {
		final int[] SEASON = { 1, 1, 1, 2, 2, 2, 3, 3, 3, 4, 4, 4 };
		Calendar cal = Calendar.getInstance();
		cal.setTime(date);
		int sean = SEASON[cal.get(Calendar.MONTH)];
		cal.set(Calendar.MONTH, sean * 3 - 3);
		return cal.getTime();
	}

	// 返回某个日期下几天的日期
	public static Date getNextDay(Date date, int i) {
		Calendar cal = new GregorianCalendar();
		cal.setTime(date);
		cal.set(Calendar.DATE, cal.get(Calendar.DATE) + i);
		return cal.getTime();
	}

	// 返回某个日期前几天的日期
	public static Date getFrontDay(Date date, int i) {
		Calendar cal = new GregorianCalendar();
		cal.setTime(date);
		cal.set(Calendar.DATE, cal.get(Calendar.DATE) - i);
		return cal.getTime();
	}

	// 获取某年某月到某年某月按天的切片日期集合(间隔天数的集合)
	@SuppressWarnings({ "rawtypes", "unchecked" })
	public static List getTimeList(int beginYear, int beginMonth, int endYear,
			int endMonth, int k) {
		List list = new ArrayList();
		if (beginYear == endYear) {
			for (int j = beginMonth; j <= endMonth; j++) {
				list.add(getTimeList(beginYear, j, k));
			}
		} else {
			{
				for (int j = beginMonth; j < 12; j++) {
					list.add(getTimeList(beginYear, j, k));
				}
				for (int i = beginYear + 1; i < endYear; i++) {
					for (int j = 0; j < 12; j++) {
						list.add(getTimeList(i, j, k));
					}
				}
				for (int j = 0; j <= endMonth; j++) {
					list.add(getTimeList(endYear, j, k));
				}
			}
		}
		return list;
	}

	// 获取某年某月按天切片日期集合(某个月间隔多少天的日期集合)
	@SuppressWarnings({ "unchecked", "rawtypes" })
	public static List getTimeList(int beginYear, int beginMonth, int k) {
		List list = new ArrayList();
		Calendar begincal = new GregorianCalendar(beginYear, beginMonth, 1);
		int max = begincal.getActualMaximum(Calendar.DATE);
		for (int i = 1; i < max; i = i + k) {
			list.add(begincal.getTime());
			begincal.add(Calendar.DATE, k);
		}
		begincal = new GregorianCalendar(beginYear, beginMonth, max);
		list.add(begincal.getTime());
		return list;
	}


	/**
	 * 是否在两个时间之间
	 * @param t1
	 * @param t2
	 * @param val
	 * @return
	 */
	public static boolean isBetween(Date t1,Date t2,Date val){
		if(t1.compareTo(val) == 1){
			return false;
		}
		if(t2.compareTo(val) == -1){
			return false;
		}
		return true;
	}

	/**
	 * 是否是今天
	 * @return
	 */
	public static boolean isToday(Date date){
		if(date == null){
			return false;
		}
		Date btday = getDayBegin();
		Date etday = getDayEnd();
		return isBetween(btday, etday, date);
	}

	/**
	 * 是否是昨天
	 * @return
	 */
	public static boolean isYesterday(Date date){
		if(date == null){
			return false;
		}
		Date btday = getBeginDayOfYesterday();
		Date etday = getEndDayOfYesterDay();
		return isBetween(btday, etday, date);
	}

	/**
	 * 是否是本周
	 * @return
	 */
	public static boolean isThisweek(Date date){
		if(date == null){
			return false;
		}
		Date btday = getBeginDayOfWeek();
		Date etday = getEndDayOfWeek();
		return isBetween(btday, etday, date);
	}

	/**
	 * 是否是上周
	 * @return
	 */
	public static boolean isLastweek(Date date){
		if(date == null){
			return false;
		}
		Date btday = getBeginDayOfLastWeek();
		Date etday = getEndDayOfLastWeek();
		return isBetween(btday, etday, date);
	}

	/**
	 * 是否是本月
	 * @return
	 */
	public static boolean isThismonth(Date date){
		if(date == null){
			return false;
		}
		Date btday = getBeginDayOfMonth();
		Date etday = getEndDayOfMonth();
		return isBetween(btday, etday, date);
	}

	/**
	 * 是否是上月
	 * @return
	 */
	public static boolean isLastmonth(Date date){
		if(date == null){
			return false;
		}
		Date btday = getBeginDayOfLastMonth();
		Date etday = getEndDayOfLastMonth();
		return isBetween(btday, etday, date);
	}

	public static List<Date> getDatesInStr(String value){
		List<Date> times = new ArrayList<>();
		if(value == null || value.length() == 0){
			return times;
		}
		//全格式年月日
		String datefull = "[0-9]{4}[-][0-9]{1,2}[-][0-9]{1,2}[ ][0-9]{1,2}[:][0-9]{1,2}[:][0-9]{1,2}";
		//年月日格式
		String dataless = "[0-9]{4}[-][0-9]{1,2}[-][0-9]{1,2}";
		Pattern pattern = Pattern.compile(String.format("(%s)|(%s)", datefull, dataless));
		Matcher matcher = pattern.matcher(value);
		SimpleDateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
		while(matcher.find()){
			String dateStr = matcher.group(0);
			if(dateStr.matches(dataless)){
				dateStr = String.format("%s 00:00:00",dateStr);
			}
			Date data = null;
			try {
				data = dateFormat.parse(dateStr);
			} catch (ParseException e) {
				e.printStackTrace();
			}
			if(data != null){
				times.add(data);
			}
		}
		return times;
	}

	/**
	 *
	 * <p>Description: 本地时间转化为UTC时间</p>
	 * @param localTime
	 * @return
	 * @author wgs
	 * @date  2018年10月19日 下午2:23:43
	 *
	 */
	public static Date localToUTC(String localTime) {
		SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
		Date localDate= null;
		try {
			localDate = sdf.parse(localTime);
		} catch (ParseException e) {
			e.printStackTrace();
		}
		long localTimeInMillis=localDate.getTime();
		/** long时间转换成Calendar */
		Calendar calendar= Calendar.getInstance();
		calendar.setTimeInMillis(localTimeInMillis);
		/** 取得时间偏移量 */
		int zoneOffset = calendar.get(java.util.Calendar.ZONE_OFFSET);
		/** 取得夏令时差 */
		int dstOffset = calendar.get(java.util.Calendar.DST_OFFSET);
		/** 从本地时间里扣除这些差量，即可以取得UTC时间*/
		calendar.add(java.util.Calendar.MILLISECOND, -(zoneOffset + dstOffset));
		/** 取得的时间就是UTC标准时间 */
		Date utcDate=new Date(calendar.getTimeInMillis());
		return utcDate;
	}

	/**
	 *
	 * <p>Description:UTC时间转化为本地时间 </p>
	 * @param utcTime
	 * @return
	 * @author wgs
	 * @date  2018年10月19日 下午2:23:24
	 *
	 */
	public static Date utcToLocal(String utcTime){
		SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss.sss'Z'");
		sdf.setTimeZone(TimeZone.getTimeZone("UTC"));
		Date utcDate = null;
		try {
			utcDate = sdf.parse(utcTime);
		} catch (ParseException e) {
			e.printStackTrace();
		}
		sdf.setTimeZone(TimeZone.getDefault());
		Date locatlDate = null;
		String localTime = sdf.format(utcDate.getTime());
		try {
			locatlDate = sdf.parse(localTime);
		} catch (ParseException e) {
			e.printStackTrace();
		}
		return locatlDate;
	}

}